Suppress deprecation warning in Gradle build

spring-webmvc/src/test/java/org/springframework/web/servlet/mvc/method/annotation/ResponseEntityExceptionHandlerTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -165,6 +165,7 @@ public class ResponseEntityExceptionHandlerTests {
 	}
 
 	@Test
+	@SuppressWarnings("deprecation")
 	public void httpMessageNotReadable() {
 		Exception ex = new HttpMessageNotReadableException("message");
 		testException(ex);